Hi Ginger,
TeamViewer does not offer remote support and we certainly would not have locked you out of your computer.
TeamViewer GmbH is a company based in Germany, which develops a remote support tool. We would never make cold calls to private users unless they have contacted us in regards to the usability of our application (TeamViewer). Although TeamViewer is a commercial product, it may be used for free if it is used in a private, non-commercial context (for example, for helping friends or family members with computer problems).
If you have been contacted and offered support from someone claiming to be TeamViewer, you can contact us at fraud@teamviewer.com
Regards,-Scotty